Table 3

Average weekly milk production, milk composition, DMI and EB in the two groups of cows during the first 7 weeks postpartum
Week after calving
 1
 2
 3
 4
 5
 6
 7
 S.E.
 P




















ovarian resumption
 day
 ovarian resumption × day
Milk yield (kg/day)
 A
 17
 19
 24
 23
 25
 26
 27
 2.67
 NS
 *
 NS

B
 21
 19
 20
 23
 25
 25
 27



Milk Fat (%)
 A
 7.03
 5.31
 4.53
 4.48
 4.65
 4.41
 4.70
 0.47
 NS
 **
 NS

B
 7.10
 5.40
 4.18
 4.53
 4.53
 4.50
 4.55



Milk Protein (%)
 A
 3.53
 3.83
 3.78a
 3.34
 3.15
 3.20
 3.18
 0.17
 *
 *
 NS

B
 3.60
 3.37
 3.25b
 3.28
 3.08
 3.23
 3.03



DMI (kg/day)
 A
 11.3
 14.5
 15.5
 15.8
 18.0
 17.9
 19.3
 1.28
 NS
 **
 NS

B
 11.2
 11.8
 13.6
 16.9
 17.1
 17.5
 18.6



Energy Balance (MJ/day)
 A
 -28.66
 -7.64
 -12.66
 -3.81
 2.65
 1.52
 5.80
 8.31
 NS
 **
 NS

B
 -42.60
 -27.48
 -2.40
 8.19
 3.90
 4.31
 5.71



a,b,* P – value < 0.05.

** P – value < 0.01

Konigsson et al. Acta Veterinaria Scandinavica 2008 50:3   doi:10.1186/1751-0147-50-3